| 摘要 |
A magnetic coil arrangement for a magnetic field applicator (1) which heats magnetic or magnetizable substances or solids in biological tissue is disclosed which includes a coolable magnetic yoke (2) with two spaced, opposing pole shoes (7, 8) separated from each other by a exposure volume gap (12) on the magnetic yoke (2). A magnetic coil (22) is assigned to each of the two pole shoes (7, 8) to produce a magnetic alternating field. The magnetic coils are designed as disk coils with helicoidally extending coil windings (39) respectively surrounding the pole shoe end of the assigned pole shoe (7, 8) with a surrounding magnetic coil/pole shoe gap (57). According to the invention, the magnetic coil (22) is respectively arranged in a coil box annularly surrounding the assigned pole shoe (7, 8), with the coil box (9, 10) being provided with at least one cooling air admission port (51, 52, 53) for connection of a cooling air pump and with at least one cooling air discharge port (57, 66).
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